Direct Transient Response Analysis of a Spanner?
Material: Structural Steel, Element Size: 2 mm
Force Time
100 0-2
500 3-5
1000 6-10
500 11-15
1000 16-18
5000 19-20
10000 21-22
Output: Total deformation, Von Misses Stress
Answers
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Avanish:
The problem that you are proposing requires more information to setup and solve, but there are some key considerations to ensuring that your problem is setup correctly.
The first of these is that the geometry that you provide has features which are not on a similar scale to your mesh size. There are generally two options for selecting how to deal with this: 1) remesh the model so that the features can be captured by smaller mesh in more refined areas or 2) defeature the finer features (fillets, in this case) from the model so that they do not cause issues when solving and post-processing your results. You can learn more about the benefits of remeshing and defeaturing in the HyperWorks for Pre-Processing training.
The second recommendation is that of loading the model. The applied force data that you provided can be entered into HyperWorks as a tabular curve and applied to the model for use with transient loading. Because 22 seconds is considered a very long time for transient simulation of a FE model, it may be more reasonable to set up five static loadcases on the model representing your "plateau" regions of 100, 500, 1000, 5000, and 10000 units unless you are specifically attempting to study the material and geometric behavior as the model is transitioned between those loading states. This will save solution time and storage space. Note that this curve is usually applied onto a unit vector describing the directional application of the force.
Final considerations may include matching your analysis to the physical interaction of a real spanner with a nut: The parts are not bonded, welded, or adhered, and so the spanner/nut interaction would be a contact scenario rather than a rigid or fixed support connection, because there is a difference between the application of tensile and compressive forces in the real scenario that this problem represents. Setting up contact is a nonlinear analysis and you can learn more about setting that up for a HyperWorks analysis in the OptiStruct for Nonlinear Analysis training or through an Inspire for Structural Analysis training course.
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Thankyou, but i am not understand how to Apply all force with give time intervals. How to do this. If possible please make video in the problem and explore it.Avanish:
The problem that you are proposing requires more information to setup and solve, but there are some key considerations to ensuring that your problem is setup correctly.
The first of these is that the geometry that you provide has features which are not on a similar scale to your mesh size. There are generally two options for selecting how to deal with this: 1) remesh the model so that the features can be captured by smaller mesh in more refined areas or 2) defeature the finer features (fillets, in this case) from the model so that they do not cause issues when solving and post-processing your results. You can learn more about the benefits of remeshing and defeaturing in the HyperWorks for Pre-Processing training.
The second recommendation is that of loading the model. The applied force data that you provided can be entered into HyperWorks as a tabular curve and applied to the model for use with transient loading. Because 22 seconds is considered a very long time for transient simulation of a FE model, it may be more reasonable to set up five static loadcases on the model representing your "plateau" regions of 100, 500, 1000, 5000, and 10000 units unless you are specifically attempting to study the material and geometric behavior as the model is transitioned between those loading states. This will save solution time and storage space. Note that this curve is usually applied onto a unit vector describing the directional application of the force.
Final considerations may include matching your analysis to the physical interaction of a real spanner with a nut: The parts are not bonded, welded, or adhered, and so the spanner/nut interaction would be a contact scenario rather than a rigid or fixed support connection, because there is a difference between the application of tensile and compressive forces in the real scenario that this problem represents. Setting up contact is a nonlinear analysis and you can learn more about setting that up for a HyperWorks analysis in the OptiStruct for Nonlinear Analysis training or through an Inspire for Structural Analysis training course.
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Avanish, this type of problem can be set up in many different Altair preprocessing software - such as Inspire, HyperWorks, and SimLab, each of which has a differing workflow as well as particular strengths.
Generally, the process will be:
- 1) Import the geometry
- 2) Clean and/or defeature the geometry
- 3) Mesh the geometry
- 4) Create materials and properties
- 5) Create boundary conditions for the analysis
- 6) Create loading conditions for the analysis
- 7) Specify analysis parameters and outputs
- 8) Export the analysis
- 9) Solve in OptiStruct
- 10) Post-Process the analysis results
Do you know which Altair pre-processing software you are interested in using to set up this analysis?
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Altair Employee